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arXiv · 2312.05514

Prime orbit theorems for expanding Thurston maps: Dirichlet series and orbifolds

Zhiqiang Li·Tianyi Zheng
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Abstract

We obtain an analog of the prime number theorem for a class of branched covering maps on the $2$-sphere $S^2$ called expanding Thurston maps, which are topological models of some non-uniformly expanding rational maps without any smoothness or holomorphicity assumptions. More precisely, we show that the number of primitive periodic orbits, ordered by a weight on each point induced by an (eventually) positive real-valued H\"{o}lder continuous function on $S^2$ that is not cohomologous to a constant, is asymptotically the same as the well-known logarithmic integral. In particular, our results apply to postcritically-finite rational maps for which the Julia set is the whole Riemann sphere.

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Zhiqiang Li, Tianyi Zheng. 2023-12-09. Prime orbit theorems for expanding Thurston maps: Dirichlet series and orbifolds. https://doi.org/10.1016/j.aim.2024.109600

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